Radian
= Radian
{title2=$\mathrm{rad}$}
{wiki}
An <angle> in <radians> is the ratio of its subtended arc <length> to the radius of a <circle>. A full turn is $2\pi$ <radians> and a <right angle> is $\pi/2$ <radians>.
= Radian
{title2=$\mathrm{rad}$}
{wiki}
An <angle> in <radians> is the ratio of its subtended arc <length> to the radius of a <circle>. A full turn is $2\pi$ <radians> and a <right angle> is $\pi/2$ <radians>.